Turn all the slices over so that the dry side is facing up. Cover this side with a generous layer of apple jelly. Cover every second slice with a layer of grated cheddar. Place 6 slices of bacon on the cheddar and follow with another layer of cheese. Place the remaining jelly-coated slices jelly side down on top of the cheese. There should be 8 complete sandwiches with butter on both the outsides.

Heat a Panini grill, place each sandwich on the grill and close the lid. Cook for about 6 minutes until the outside is crisp and golden and the cheese is melted all the way through. If you don’t have a Panini grill, you can use a griddle or skillet, but you’ll have to carefully turn the sandwich over halfway through cooking.